1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2010 SAE International All rights reserved. No part of this publication m
3、ay be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (outside U
4、SA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AMS3337E AEROSPACE MATERIAL SPECIFICATION AMS3337 REV. E Issued 1960-01 Reaffirmed 1998-08 Re
5、vised 2010-07 Superseding AMS3337D Silicone (PVMQ) Rubber Extreme-Low-Temperature Resistant 65 - 75 RATIONALE AMS3337E is a Five Year Review and update of this specification and deleted corrosion test. 1. SCOPE 1.1 Form This specification covers a silicone (PVMQ) rubber in the form of sheet, strip,
6、tubing, extrusions, and molded shapes. 1.2 Application Primarily for parts required to operate or seal from -121 to +446 F (-85 to +230 C), compounded especially for operation at extreme low temperatures. Silicone rubber is resistant to deterioration by weathering and by high-aniline-point petroleum
7、-base oils and remains flexible over the temperature range noted. These products are not normally suitable for use in contact with low-aniline-point petroleum-base fluids, including fuels, due to excessive swelling. 1.3 Safety Hazardous Materials While the materials, methods, applications, and proce
8、sses described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards which may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials an
9、d to take necessary precautionary measures to ensure the health and safety of all personnel involved. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the purchase order forms a part of this specification to the extent specified herein. The supplier may work to a
10、 subsequent revision of a document unless a specific document issue is specified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply. SAE AMS3337E Page 2 of 6 2.1 SAE Publications Available from SAE In
11、ternational, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS2279 Tolerances, Rubber Products AMS2810 Identification and Packaging, Elastomeric Products 2.2 ASTM Publications Available from ASTM International
12、, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM D 297 Rubber Products Chemical Analysis ASTM D 395 Rubber Property Compression Set ASTM D 412 Rubber Properties in Tension ASTM D 471 Rubber Property Effect of Liquids ASTM D 518 Rubber De
13、terioration Surface Cracking ASTM D 573 Rubber Deterioration in an Air Oven ASTM D 624 Rubber Property Tear Resistance ASTM D 1149 Rubber Deterioration Surface Ozone Cracking in a Chamber (Flat Specimens) ASTM D 2137 Rubber Property Brittleness Point of Flexible Polymers and Coated Fabrics ASTM D 22
14、40 Rubber Property Durometer Hardness 3. TECHNICAL REQUIREMENTS 3.1 Material Shall be a compound, based on a silicone (PVMQ) rubber, suitably cured to produce a product meeting the requirements of 3.2. 3.2 Properties The product shall conform to the following requirements; tests shall be performed o
15、n the product supplied and in accordance with specified ASTM methods, insofar as practicable: SAE AMS3337E Page 3 of 6 TABLE 1 - PROPERTIES Paragraph Property Requirement Test Method 3.2.1 As Received 3.2.1.1 Hardness, Durometer “A” or equivalent 70 5 ASTM D 2240 3.2.1.2 Tensile Strength, minimum 60
16、0 psi (4.14 MPa) ASTM D 412, Die B or C 3.2.1.3 Elongation, minimum 150% ASTM D 412, Die B or C 3.2.1.4 Tear Resistance, minimum 60 pounds force/ inch (10.5 kN/m) ASTM D 624, Die B 3.2.1.5 Specific Gravity Preproduction Value 0.03 ASTM D 297 3.2.2 Petroleum Lubricating Oil Resistance(Immediate Deter
17、iorated Properties) ASTM D 471 Medium: IRM901 Temperature: 347 F 5 (175 C 3) Time: 70 hours 0.5 3.2.2.1 Hardness Change, Durometer “A” or equivalent -15 to +5 3.2.2.2 Tensile Strength Change, maximum -30% 3.2.2.3 Elongation Change, maximum -20% 3.2.2.4 Volume Change 0 to +25% 3.2.2.5 Decomposition N
18、one 3.2.2.6 Surface Tackiness None 3.2.3 Dry Heat Resistance ASTM D 573 Temperature: 437 F 5 (225 C 3) Time: 22 hours 0.5 3.2.3.1 Hardness Change, Durometer “A” or equivalent -5 to +10 3.2.3.2 Tensile Strength Change, maximum -15% 3.2.3.3 Elongation Change maximum -20% 3.2.4 Compression Set ASTM D 3
19、95, Method B Temperature: 347 F 5 (175 C 3) Time: 22 hours 0.5 3.2.4.1 Percent of Original Deflection, maximum 35 3.2.5 Low-Temperature Resistance 3.2.5.1 Brittleness Pass ASTM D 2137, Method A Temperature: -120 F 5 (-85 C 3) SAE AMS3337E Page 4 of 6 3.2.6 Weathering The product shall show no eviden
20、ce of cracking when tested in accordance with ASTM D 1149 for seven days at 104 F 2 (40 C 1). The ozone pressure shall be 50 mPa s 5. 3.3 Quality The product, as received by purchaser, shall be uniform in quality and condition, smooth, as free from foreign material as commercially practicable, and f
21、ree from imperfections detrimental to usage of the product. 3.4 Tolerances Shall conform to all applicable requirements of AMS2279. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of the product shall supply all samples for vendors tests and shall be responsible for the
22、performance of all required tests. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the product conforms to specified requirements. 4.2 Classification of Tests 4.2.1 Acceptance Tests Tests for the following requirements are acceptance tes
23、ts and shall be performed on each lot: TABLE 2 - ACCEPTANCE TESTS Requirement Paragraph Hardness, as received 3.2.1.1 Tensile Strength, as received 3.2.1.2 Elongation, as received 3.2.1.3 Specific Gravity 3.2.1.5 4.2.2 Preproduction Tests All technical requirements are preproduction tests and shall
24、be performed prior to or on the initial shipment of a product to a purchaser, when a change in ingredients and/or processing requires reapproval as in 4.4.2, and when purchaser deems confirmatory testing to be required. 4.3 Sampling and Testing Shall be as follows: 4.3.1 For Acceptance Tests Suffici
25、ent product shall be taken at random from each lot to perform all required tests. The number of determinations for each requirement shall be as specified in the applicable test procedure or, if not specified therein, not less than three. SAE AMS3337E Page 5 of 6 4.3.1.1 If specimens cannot be prepar
26、ed form the product, ASTM test specimens prepared from the same batch and state of cure shall be used. When the product supplied is an extrusion of such shape that suitable test specimens cannot be cut from the product, a separate flat strip test sample from the same production lot shall be supplied
27、 upon request. This strip shall be prepared from tubing 1.000 inch 0.063 (25.40 mm 1.60) in OD by 0.075 inch 0.008 (1.90 mm 0.20) in wall thickness, mechanically slit and flattened into a strip while being extruded, and cured in the same manner as production product. When the product is a molded sha
28、pe from which test specimens cannot be cut, a slab 6 inches (152 mm) square by 0.075 inch 0.008 (1.90 mm 0.20) thick molded from the same batch of compound shall be supplied upon request. 4.3.1.2 A lot shall be all product from the same batch of compound processed in one continuous run and presented
29、 for vendors inspection at one time. 4.3.1.3 A batch shall be the quantity of compound run through a mill or mixer at one time. 4.3.1.4 When a statistical sampling plan has been agreed upon by purchaser and vendor, sampling shall be in accordance with such plan in lieu of sampling as in 4.3.1 and th
30、e report of 4.5 shall state that such plan was used. 4.3.2 For Preproduction Tests As agreed upon by supplier and vendor. 4.4 Approval 4.4.1 Sample product shall be approved by purchaser before product for production use is supplied, unless such approval be waived by purchaser. Results of tests on p
31、roduction product shall be essentially equivalent to those on the approved sample. 4.4.2 Vendor shall use ingredients, manufacturing procedures, processes, and methods of inspection on production product which are essentially the same as those used on the approved sample product. If necessary to mak
32、e any change in ingredients, in type of equipment for processing, or in manufacturing procedures, vendor shall submit for reapproval a statement of the proposed changes in ingredients and/or processing and, when requested, sample product. Production product made by the revised procedure shall not be
33、 shipped prior to receipt of reapproval. 4.5 Reports The vendor of the product shall furnish with each shipment a report showing the results of tests to determine conformance to the acceptance test requirements and stating that the product conforms to the other technical requirements. This report sh
34、all include the purchase order number, lot number, AMS3337E, vendors compound number, form and size or part number, and quantity. 4.6 Resampling and Retesting If any specimen used in the above tests fails to meet the specified requirements, disposition of the product may be based on the results of t
35、esting three additional specimens for each original nonconforming specimen. Failure of any retest specimen to meet the specified requirements shall be cause for rejection of the product represented. Results of all tests shall be reported. 5. PREPARATION FOR DELIVERY 5.1 Identification and Packaging
36、Shall be in accordance with AMS2810. SAE AMS3337E Page 6 of 6 6. ACKNOWLEDGMENT A vendor shall mention this specification number and its revision letter in all quotations and when acknowledging purchase orders. 7. REJECTIONS Product not conforming to this specification, or to modifications authorize
37、d by purchaser, will be subject to rejection. 8. NOTES 8.1 A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the docume
38、nt title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. 8.2 Dimensions and properties in inch/pound units and the Fahrenheit temperatures are primary; dimen
39、sions and properties in SI units and the Celsius temperatures are shown as the approximate equivalents of the primary units and are presented only for information. 8.3 Purchase documents should specify not less than the following: AMS3337E Form and size or part number of product desired Quantity of product desired Acceptance standards and test method for corrosion (See 3.2.7). 8.4 Similar Specification A-A-59588, Class 1, Grade 70 is listed for information only and shall not be construed as an acceptable alternate unless all requirements of this AMS are met. PREPARED BY AMS COMMITTEE “CE“
